Don't sit home babysitting the kids and let her go out and party. You have some place to go and tell her before hand that you won't be home that evening so you can't keep the kids. You never tell her what you're doing. Don't lie, but be vague. It causes mystery.
There are a couple of things I thrown at you for you to consider. One is the idea of making her wonder if she has a WAH on her hands. You will be afraid that is exactly what she wants and that you'll lose any chance of getting her back. You've already lost her. That R is dead. That is why there is no point in discussing it. The only hope left is to have a new one. So, what did she see when she first saw you? Did she see a single attractive man who other women wanted to be with? Can you be that man again?
I'm not suggesting that you do something that would render you an unfit father! But, you need to GAL. You can do that and not tell her the details. Heck, you may go bowling, but she doesn't have to know where you've been or who all was there.
My suggestion about this is....if you want her to show respect by being home at a respectable hour of the evening, then I think you should do that .......as long as she does. However, if she doesn't show respect for you in that area.....then let her find out how it feels when you are out all night. You may be staying at your relative's house or a friend's. I'm not telling you to find a woman to sleep with! Do I make any sense in what I'm saying to do?
She's got to be attracted to you. She's got to think she's losing you fast. She's got to think that "you" are not interested in "her" anymore. She isn't sexy to you! Wow!
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!